Nomenclatural act

Plant Fossil Names Registry Number: PFN001960
Act LSID: urn:lsid:plantfossilnames.org:act:1960
Harmsia hydrocotyloidea sp. nov.
McIver, E. E. & Basinger, J. F. (1993): Flora of the Ravenscrag Formation (Paleocene), southwestern Saskatchewan, Canada. – Palaeontographica Canadiana 10: 1–167.